Aitech Defense Systems Inc. in Chatsworth, Calif., is introducing the radiation-hardened S950-02 single-board computer for spacecraft avionics. The 3U CompactPCI 1 GHz rad-hard embedded computer is an enhanced version of the Aitech space-flown S950 single-board computer with increased processing power and data throughput. Using the PowerPC 750GX embedded processor for space avionics, the conduction-cooled S950-02, consumes less than 10 watts and tolerates an unshielded total ionization radiation dose of more than 15 kilorads. The embedded systems computer is for space embedded computing applications including low Earth orbit, Mars terrestrial, and geostationary Earth orbit. The board is suitable for harsh environment, mission-critical systems including redundant mission computers, flight guidance and navigation computers, command and data handling computers, as well as in solid-state recorders, video controllers, and manipulation controllers. To protect on-board memory resources from radiation, the S950-02 has 128 megabytes of triple-redundant SDRAM with three bits per cell. On the rad-tolerant FPGA, a voting mechanism performed only on the read cycle allows for data correction before sending to the CPU or PowerPC bus. One megabyte of dual-redundant boot Flash stores the on-board Boot firmware and ensures full data integrity in the event of corruption during the boot-up sequence. For more information, visit Aitech online at www.rugged.com.
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